Vehicle lamp

Abstract

A lamp for a vehicle comprises a lens disposed on an optical axis, a light source disposed at a rear of a focal point of the lens, a reflector configured to reflect light emitted from the light source forward, a supporting plate configured to be coupled to a lower part of the reflector, a first coupling unit configured to couple the supporting plate and the reflector from a front of the supporting plate and the reflector, and a second coupling unit configured to couple the supporting plate and the reflector from a rear of the supporting plate and the reflector. The first coupling unit and the second coupling unit have different coupling surfaces from each other.

What is claimed is: 
     
       1. A lamp for a vehicle, comprising:
 a lens disposed on an optical axis extending in a longitudinal direction of the vehicle; 
 a light source disposed at a rear of a focal point of the lens; 
 a reflector for reflecting light emitted from the light source forward; 
 a supporting plate configured to support the lens and the reflector; 
 a heat sink configured to be coupled to a rear of the supporting plate for dissipating heat generated by the light source; and 
 a third coupling unit and a fourth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the third coupling unit connects the rear of the supporting plate and a top of the heat sink and the fourth coupling unit connects a lower part of the supporting plate and a central part of the heat sink, and 
 wherein the fourth coupling unit comprises a support disposed spaced apart from the supporting plate, positioned below the supporting plate and extending in parallel to the supporting plate, a coupling rib protruding from the support to the bottom of the supporting plate, and a coupling recess provided at the center part of the heat sink, and the coupling rib corresponds to, and is coupled to, the coupling recess. 
 
     
     
       2. The lamp of  claim 1 , wherein the third coupling unit comprises a plurality of third hooks disposed at one of the rear of the supporting plate and the top of the heat sink and a plurality of third engaging members disposed at the other, and the third hooks are coupled to the third engaging members, respectively, through snap fitting. 
     
     
       3. The lamp of  claim 1 , wherein a top surface of the support is coupled to a bottom surface of the coupling recess. 
     
     
       4. The lamp of  claim 1 , further comprising:
 a fifth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the fifth coupling unit connects the lower part of the supporting plate and a lower part of the heat sink. 
 
     
     
       5. The lamp of  claim 4 , wherein the fifth coupling unit comprises a plurality of fifth hooks disposed at one of the lower part of the supporting plate and the lower part of the heat sink and a plurality of fifth engaging members disposed at the other, and the fifth hooks are coupled to the fifth engaging members, respectively, through snap fitting. 
     
     
       6. The lamp of  claim 4 , wherein the fifth coupling unit comprises a plurality of pins disposed at one of the lower part of the supporting plate and the lower part of the heat sink and a plurality of coupling holes disposed at the other, and the pins are coupled to the coupling holes, respectively, through a boss structure. 
     
     
       7. The lamp of  claim 6 , wherein a cross-sectional height of the boss structure varies along a direction of the optical axis. 
     
     
       8. The lamp of  claim 1 , further comprising:
 a plurality of assembling ribs for coupling the supporting plate and the heat sink. 
 
     
     
       9. The lamp of  claim 8 , wherein the assembling ribs comprise a plurality of first assembling ribs formed at at least one of the heat sink and the supporting plate for limiting vertical movement of the supporting plate. 
     
     
       10. The lamp of  claim 8 , wherein the assembling ribs comprise a plurality of second assembling ribs formed at at least one of the heat sink and the supporting plate for limiting lateral movement of the supporting plate. 
     
     
       11. The lamp of  claim 8 , wherein a height of the assembling ribs varies along a direction of the optical axis. 
     
     
       12. A lamp for a vehicle, comprising:
 a lens disposed on an optical axis extending in a longitudinal direction of the vehicle; 
 a light source disposed at a rear of a focal point of the lens; 
 a reflector for reflecting light emitted from the light source forward; 
 a supporting plate configured to support the lens and the reflector; 
 a heat sink configured to be coupled to a rear of the supporting plate for dissipating heat generated by the light source; 
 a third coupling unit and a fourth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the third coupling unit connects the rear of the supporting plate and a top of the heat sink and the fourth coupling unit connects a lower part of the supporting plate and a central part of the heat sink, 
 wherein the fourth coupling unit comprises a support formed below the supporting plate and extending in parallel to the supporting plate, a coupling rib protruding from the support to the bottom of the supporting plate, and a coupling recess provided at the center part of the heat sink, and the coupling rib corresponds to, and is coupled to, the coupling recess, 
 a fifth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the fifth coupling unit connects the lower part of the supporting plate and a lower part of the heat sink, and 
 wherein the fifth coupling unit comprises a plurality of fifth hooks disposed at one of the lower part of the supporting plate and the lower part of the heat sink and a plurality of fifth engaging members disposed at the other, and the fifth hooks are coupled to the fifth engaging members, respectively, through snap fitting. 
 
     
     
       13. A lamp for a vehicle, comprising:
 a lens disposed on an optical axis extending in a longitudinal direction of the vehicle; 
 a light source disposed at a rear of a focal point of the lens; 
 a reflector for reflecting light emitted from the light source forward; 
 a supporting plate configured to support the lens and the reflector; 
 a heat sink configured to be coupled to a rear of the supporting plate for dissipating heat generated by the light source; 
 a third coupling unit and a fourth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the third coupling unit connects the rear of the supporting plate and a top of the heat sink and the fourth coupling unit connects a lower part of the supporting plate and a central part of the heat sink, 
 wherein the fourth coupling unit comprises a support formed below the supporting plate and extending in parallel to the supporting plate, a coupling rib protruding from the support to the bottom of the supporting plate, and a coupling recess provided at the center part of the heat sink, and the coupling rib corresponds to, and is coupled to, the coupling recess, 
 a fifth coupling unit for coupling the supporting plate and the heat sink, 
 wherein the fifth coupling unit connects the lower part of the supporting plate and a lower part of the heat sink, and 
 wherein the fifth coupling unit comprises at least a pin disposed at one of the lower part of the supporting plate and the lower part of the heat sink and at least a coupling hole disposed at the other, and the pins are coupled to the coupling holes, respectively, through a boss structure.